Rhodora 31: 105 (1929).

Type locality: USA, Massachusetts, Plymouth County, Wareham, 1924, C. A. Robbins (FH - lectotype). Designated by Ahti (1993: 94).

Chemistry: Fumarprotocetraric acid (Ladd et al. 1994: 133).

Note: "This species resembles Cladonia piedmontensis G. Merr., but lacks usnic acid and contains fumarprotocetraric acid.